← SMITH ST_CSO_DARTMOUTH
Spill evidence · Friends of the Dart
SMITH ST_CSO_DARTMOUTH
Combined sewer overflow · SBB01095 · feeds DARTMOUTH STW
Dry spill
Evidence strength
Low confidence- ✓ Dry on the EA 1-day window
- ✓ Monitor 96% operational that year
The discharge
- Spill day
- Friday, 13 May 2022
- Started
- 13 May 2022, 18:37
- Ended
- 13 May 2022, 18:37
- Duration
- 0 seconds
- Receiving water
- Dart (Tidal)
- Parish
- Dartmouth
Rainfall evidence
Daily rainfall at the matched gauge (Brixham) for the spill day and the days before. A spill is dry when every day in the window is ≤ 0.25 mm.
1-day window: Dry spill3-day window: Wet weather4-day window: Wet weather
| Date | Rainfall | |
|---|---|---|
| 13/05/2022 (spill day) | 0 mm | dry |
| 12/05/2022 | 0 mm | dry |
| 11/05/2022 | 5.8 mm | rain |
| 10/05/2022 | 0.6 mm | rain |
| 09/05/2022 | 0.6 mm | rain |
River flow that day: 2.485 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 5.3 km apart. Closer means the rainfall reading is more representative of the overflow.
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Severity & context
- Bathing water
- Warfleet Creek, Dart Estuary
- Shellfish water
- Dart
- Ahead of the works
- Unknown (no works overflow data)
- EA annual return (2022)
- 94 counted spills · 206 h total
- Monitor uptime (2022)
- 96% operational
⚠ Coastal / tidal location — very short discharges around high tide can be monitor artefacts; corroborate with tide times before relying on short events here.
Method & provenance. Dry/wet classification is decided by rainfall at the nearest EA gauge — ≤ 0.25 mm on the spill day and each preceding day of the window (how we classify). Spill data: Environment Agency EDM (outlet SBB01095). Rainfall: EA Hydrology gauge 9dba2bf3-f5ea-4616-ac8e-dce16dbc0dc8. A dry spill is precautionary evidence of a likely fault, not proof of an offence — we test the rainfall, not the works' flow. Generated by River Hub.